From 91a360472f50cf58edeaf7a05a9a511dc9a5718b Mon Sep 17 00:00:00 2001
From: Stephan Bergmann <sbergman@redhat.com>
Date: Thu, 3 Dec 2020 19:44:44 +0100
Subject: [PATCH] At least Clang 12 trunk understands -std=c++2b now

...since <https://github.com/llvm/llvm-project/commit/
6627a3c2873fdf7ccba1a1573371079be48b36e8> "[c++2b] Add option -std=c++2b to
enable support for potential C++2b features."

Change-Id: I56b689c740c4269fa5ee29976ed8b0c17a04e6a1
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/107175
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 3f418e27bb10..bc71599f53c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7042,7 +7042,7 @@ if test "$COM" = MSC -a "$COM_IS_CLANG" != TRUE; then
 elif test "$GCC" = "yes" -o "$COM_IS_CLANG" = TRUE; then
     my_flags='-std=c++17 -std=c++1z'
     if test "$with_latest_c__" = yes; then
-        my_flags="-std=c++20 -std=c++2a $my_flags"
+        my_flags="-std=c++2b -std=c++20 -std=c++2a $my_flags"
     fi
     for flag in $my_flags; do
         if test "$COM" = MSC; then